ceties Posted January 29, 2008 Report Posted January 29, 2008 Hi all, I just started with Xcontrols. I am trying to create my own Listbox and I don't want to have all the properties code in "display state change" of Facade.vi. So I put a reference of the Listbox into State 1.vi because I thought that this way I could change the properties of the control in the property Vis. But I still get "Object reference is invalid" error. Why? I initialized the reference in "Exec state change". So Why? Thank a lot guys! LV 8.5, WinXP Quote
Ton Plomp Posted January 29, 2008 Report Posted January 29, 2008 QUOTE(ceties @ Jan 28 2008, 04:53 PM) Hi all, I just started with Xcontrols. I am trying to create my own Listbox and I don't want to have all the properties code in "display state change" of Facade.vi. So I put a reference of the Listbox into State 1.vi because I thought that this way I could change the properties of the control in the property Vis. But I still get "Object reference is invalid" error. Why? I initialized the reference in "Exec state change". So Why? Thank a lot guys! LV 8.5, WinXP In the 'Exec state change' you should set the 'State Changed?' boolean in the 'Action' cluster to true: For more info see the XControl wiki. Ton Quote
ceties Posted January 29, 2008 Author Report Posted January 29, 2008 Thanks a lot. It's in short time second stupid question regarding LabVIEW :headbang: Nice link btw! Quote
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